|Planning and management of aircraft pavement construction. - Smith, Timothy.|
|The attenuation of flexural waves in mass loaded beams. - Smith, Timothy L.|
Available from National Technical Information Service, Springfield, Va
Keywords: Naval architecture; Mechanical engineering
|Hydrogen-powered flight - Smith, Timothy D|
As the Nation moves towards a hydrogen economy the shape of aviation will change dramatically. To accommodate a switch to hydrogen the aircraft designs, propulsion, and power systems will look much different than the systems of today. Hydrogen will enable a number of new aircraft capabilities from high altitude long endurance remotely operated aircraft (HALE ROA) that will fly weeks to months without refueling to clean, zero emissions transport aircraft...
Keywords: COMMUNICATION; ACTS; ASYNCHRONOUS TRANSFER MODE; PROTOCOL (COMPUTERS); COMMERCE; EXTREMELY HIGH FREQUENCIES; INTERNETS; INTEROPERABILITY; TRANSPARENCE
|Validation of the mine impact burial model using experimental data. - Smith, Timothy Brian.|
Thesis advisor(s): Chu, Peter C.
|Yellowstone National Park: Submerged Resources Survey - Bradford, James; Russell, Matthew; Murphy, Larry; Smith, Timothy|
|High-Area-Ratio Rocket Nozzle at High Combustion Chamber Pressure: Experimental and Analytical Validation - Jankovsky, Robert S.|
Experimental data were obtained on an optimally contoured nozzle with an area ratio of 1025:1 and on a truncated version of this nozzle with an area ratio of 440:1. The nozzles were tested with gaseous hydrogen and liquid oxygen propellants at combustion chamber pressures of 1800 to 2400 psia and mixture ratios of 3.89 to 6.15. This report compares the experimental performance, heat transfer, and boundary layer total pressure measurements with theoretical predictions of the current Joint Army, N...
Keywords: TRAJECTORY PLANNING; INTERPOLATION; RANGE (EXTREMES); TRIGONOMETRIC FUNCTIONS; CURVE FITTING; RESEARCH; EDUCATION; SPECTRA
|Feasibility comparison and analysis of the Unix network environment and the Windows NT environment for integration with the Defense Information Infrastructure (DII) - Sauer, Mark F.;Smith, Timothy J.;Sprague, John W.;Staier, Joseph E.|
Thesis advisor(s): Norman Schneidewind, James C. Emery
|A treatise of health and long life, with the sure means of attaining it : in two books - Lessius, Leonardus, 1554-1623|
"A treatise on the benefits of a sober life : Written originally in Italian by Lewis Cornaro, a noble Venetian. Translated into Latin, by Leonard Lessius; and now into English, by T.S. ... London, MDCCLXVII:" 38 p. at end
Keywords: Hygiene; Longevity
|Experimental Evaluation of a Subscale Gaseous Hydrogen/Gaseous Oxygen Coaxial Rocket Injector - Smith, Timothy D.|
The next generation reusable launch vehicle may utilize a Full-Flow Stage Combustion (FFSC) rocket engine cycle. One of the key technologies required is the development of an injector that uses gaseous oxygen and gaseous hydrogen as propellants. Gas-gas propellant injection provides an engine with increased stability margin over a range of throttle set points. This paper summarizes an injector design and testing effort that evaluated a coaxial rocket injector for use with gaseous oxygen and gase...
Keywords: NUMERICAL ANALYSIS; ELECTRONIC STRUCTURE; MOLECULES; STABILITY; DYNAMIC MODELS; RARE GAS COMPOUNDS; WAVE FUNCTIONS; ATOMS; BENDING; DECOMPOSITION; DISSOCIATION
|Performance of an Axisymmetric Rocket Based Combined Cycle Engine During Rocket Only Operation Using Linear Regression Analysis - Smith, Timothy D.|
The all rocket mode of operation is shown to be a critical factor in the overall performance of a rocket based combined cycle (RBCC) vehicle. An axisymmetric RBCC engine was used to determine specific impulse efficiency values based upon both full flow and gas generator configurations. Design of experiments methodology was used to construct a test matrix and multiple linear regression analysis was used to build parametric models...
Keywords: CERAMICS; FIBER COMPOSITES; SILICON CARBIDES; JOINTS (JUNCTIONS); BONDING; AEROSPACE SYSTEMS; HIGH TEMPERATURE